Grid Hybrid Inverter Specification

MARS Series Hybrid Inverter Specification.pdf    (click to download)                         

Configure the host computer:

Open PowerMonitorV2.0.0_Setup.exe   (click to download) , select the corresponding port to open, and establish communication connection with the inverter, then click User Settings to enter the setting interface.

Home Storage Inverter Protocol V1.5.pdf  (click to download)                                                                 

Grid-connected backflow prevention setup guidelines(DESKTOP-GEFROHK).pdf (click to download)​

Home Storage Inverter Wiring Guidelines.pdf  (click to download)                                                          

Q1:  Input UV：Input under voltage

IAnalysis: DC Input PV1 voltage low.  DC Input PV2 voltage low

Solution:

1. If it only happened in a bad weather (such as: in the evening or morning); but it’s normal at other times, so the failure probably be caused by the insufficient input power, this case is a normal phenomenon; Just wait for weather becoming better, the machine will automatically recover and generate power again, please ignore this situation.

2.Disconnect both of AC side and DC side switch, and unplug the Solar panel string from inverter one by one, to  check if the positive and negative of each string is wrong or opposite, and test if each string voltage is within inverter rated range.If the DC connection is correct, please restart the inverter and observe whether the inverter can normally return to work. 

3.Check if the inverter running mode be set correctly.

4.To exchange the 2 MPPT panel string and keep a further observation.

Q2:  Bus UV：Bus Under voltage

Analysis:Inverter internal DC BUS voltage under range.

Solution:

1. Check if the panel DC voltage is In the rated range and be connected correctly

2. Turn off the inverter (Disconnect DC and AC), after 5 minutes then turn it on, observe it and check if inverter is able to return to normal. Check if the faulty will be repeated again. 

Q3: Grid UV：AC voltage under rated range

Analysis: Grid voltage too low

Solution: 

1. Check what the phase voltage is and frequency is from the display, check if they are in the rated range.

2. Check if AC terminal and distribution box internal connection is correct, check if any connection is loose or disconnected, check if the breaker in distribution box was tripped.

3. Use the multimeter to check if the grid connection is correct, and check if phase voltage and line voltage is too low

4. Check if the inverter’s safety code be set correctly and Grid under-voltage protection point be set to match actual situation.

5. Waiting for a while until grid voltage recovered, to observe on inverter and check if it can automatically return to normal running.

Q4: Grid UV：AC voltage over range

Analysis: Grid voltage too high

lSolution:

1. Check what the phase voltage is and frequency is from the display, check if they are in the rated range.

2. Check if AC terminal and distribution box internal connection is correct, check if any connection is loose or disconnected, check if the breaker in distribution box was tripped.

3. Use the multimeter to check if the grid connection is correct, and check if phase voltage and line voltage is too low

4. Check if the inverter’s safety code be set correctly and Grid under-voltage protection point be set to match actual situation.

5. Waiting for a while until grid voltage recovered, to observe on inverter and check if it can automatically return to normal running.

 Q5: Grid UF：AC frequency under range

Analysis: Grid frequency too low

Soluition:

1. Check what the displayed AC frequency value is, check if the value is in the rated range.

2. Check if AC terminal and distribution box internal connection is correct, check if any connection is loose or disconnected, check if the breaker in distribution box was tripped.

3. Use a multimeter to see if the grid wire connection is correct ; check if the grid frequency is too low

4. Check if the inverter’s safety code be set correctly and Grid under-frequency point be set to match actual situation.

5. Please Wait for a while until the grid frequency recovered, then check if the inverter can return to normal

Q6: Grid OF：AC frequency over range

Analysis: Grid frequency too high

Solution:

1. Check what the displayed AC frequency value is, check if the value is in the rated range.

2. Use a multimeter to check if the grid connection is correct ; and check if the grid frequency is too high

3. Check if the inverter’s safety code be set correctly and Grid over-frequency protection point be set to match actual situation.

4. Please Wait for a while until the grid frequency recovered, then check if the inverter can return to normal

Q7: Clock Fail：clock incorrect

Analysis: The Inverter’s clock time be set to wrong or not set

Solution:

1. Check if the inverter’s clock be set correctly

2. Re-set the inverter’s clock through HMI or monitoring, check if the alarm is repeated.  

Q8: Lost Box：Box lost connection

Analysis: The communication is faulty between combiner box and inverter

Solution: Check if the RS485 cable connection between DC combiner box and inverter is correct, whether It is loose or disconnected.